<template>
    <div>
        <div class="search">
            <input
                class="search-input"
                type="text"
                placeholder="输入城市名或拼音"
                v-model="keyword"
            >
        </div>
        <div
            class="search-content"
            ref="search"
            v-show="keyword"
        >
            <ul>
                <li
                    class="search-item border-bottom"
                    v-for="item of list"
                    :key="item.id"
                    @click="handleCityClick(item.name)"
                >{{item.name}}</li>
                <li
                    class="search-item border-bottom"
                    v-show="hasNoData"
                >
                    没有找到匹配数据
                </li>
            </ul>
        </div>
    </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data () {
        return {
            keyword: '',
            list: [],
            timer: null
        }
    },
    computed: {
        hasNoData () {
            return !this.list.length
        }
    },
    methods: {
        handleCityClick (city) {
            // this.$store.commit('changeCity', city)
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    },
    watch: {
        keyword () {
            if (this.timer) {
                clearTimeout(this.timer)
            }
            if (!this.keyword) {
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let i in this.cities) {
                    this.cities[i].forEach((value) => {
                        if (value.spell.indexOf(this.keyword) > -1 ||
                            value.name.indexOf(this.keyword) > -1) {
                            result.push(value)
                        }
                    })
                }
                this.list = result
            }, 100)
        }
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search)
    }
}
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.search
    height 0.72rem
    background $bgColor
    padding 0 0.1rem
    .search-input
        width 100%
        height 0.62rem
        box-sizing border-box
        padding 0 0.1rem
        line-height 0.62rem
        text-align center
        border-radius 0.06rem
        color #666
.search-content
    overflow hidden
    position absolute
    top 1.6rem
    left 0
    right 0
    bottom 0
    z-index 1
    background #eee
    .search-item
        line-height 0.62rem
        padding-left 0.2rem
        background #fff
        color #666
</style>
